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参数资料
| 型号： | TA2152FN |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.008 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
| 封装： | 0.300 INCH, 0.65 MM PITCH, PLASTIC, SSOP-24 |
| 文件页数： | 12/16页 |
| 文件大小： | 364K |
| 代理商： | TA2152FN |
TA2152FN
2002-03-12
5
Application Notes
(1) Beep function
In Power Mute Mode, the beep signal from the microcomputer or other controlling device is input on the
BEEP IN pin (pin 18). This signal is output as a current which flows to the load via the BEEP output pin (pin
3/10). The beep level is set to Vo = 50dBV (RL = 16 (typ.) ). For the beep signal timing, please refer to
Figure 1.
(2) Low-cut compensation
For output-coupling type, the low-frequency range can be decreased using an output-coupling capacitor and a
load (fc = 45 Hz at C = 220 F, R = 16 ). However, since the capacitor is connected between the IC’s output pin
(pin 4/9) and EQ pin (pin 5/8), the low-frequency gain of the power amplifier increases, enabling low-cut
compensation to be performed. For the response of capacitors of different values, please refer to
Figure 2.
PW SW
ON
OFF
MUTE SW
ON
OFF
BEEP
OUT
100 ms
OCL type
100 ms
10 ms
100 ms
200 ms
100 ms
10 ms
100 ms
Output-coupling type
Figure 1
Timing chart for beep and output signals
RES
f
Frequency
f
(Hz)
R
e
sp
ons
e
(
d
B
)
8
6
4
2
0
2
4
20
50
100
200
500
1 k
2 k
No compensation
0.68
F
0.47
F
0.33
F
0.22
F
0.18
F
Figure 2
Capacitor response
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| TA2152FNG | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Low Current Consumption Headphone Amplifier (for 1.5-V/3-V Use) |
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